China Pumping Solutions Leader
Unlike gear pumps, the blades used in these rotor pumps do not physically touch each other, a feature that provides some distinct advantages when rotary lobe pumps certain types of materials. During operation, the shaft connected to the impeller rotates in the opposite direction, creating repeated low pressure in the pump body, and the suction product moves from the pump inlet port around the outside of the pump impeller to the outlet port. Because the movement of the pump blades causes the pump to expel a specific amount of fluid per rotation, the output of the pump can be easily controlled by mechanically changing the speed of the pump motor, usually using a variable frequency driver (VFD).
Advantages of rotor pump
Because the lobes of the rotor pump do not touch each other, the lobe pump can move solids suspended in the slurry (such as cherries or olives in food processing applications) without damaging the product.
Gentle pump action further reduces product damage.
Can handle larger sizes of particles pumped than other types of positive displacement pumps.
It can be cleaned easily using in situ cleaning (CIP) or in situ steam (SIP) methods, making it ideal for sanitary processing applications.
Very efficient pumping of very viscous liquids.
Sufficient fluid viscosity is assumed to provide accurate and consistent fluid output independent of changes in head pressure.
The fluid flow can be increased or decreased by controlling the drive speed.
If wetted, the rotor pump is also self-priming and can run dry for long periods of time (assuming the pump seals are lubricated).
Generally easy to maintain.
